Question
The correct sequence which shows decreasing order of the ionic radii of the elements is
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Answer
d
you can see all of them are isoelectronic and for isoelectric elements which ion has more positive charge will have lesser size. And Twhich ion has more negative charge that ion's size will be more.
you can see all of them are isoelectronic and for isoelectric elements which ion has more positive charge will have lesser size. And Twhich ion has more negative charge that ion's size will be more.
So, the correct order is $O^{2}>F^{-}>N a^{+}>m g^{2+}>A^{3+}$
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